public async Task <ListResultDto <IdentityRoleDto> > GetRolesAsync(Guid id)
        {
            var roles = await _userRepository.GetRolesAsync(id);

            return(new ListResultDto <IdentityRoleDto>(
                       ObjectMapper.Map <List <IdentityRole>, List <IdentityRoleDto> >(roles)
                       ));
        }